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    <title>标签</title>
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    <h3>今天空气质量<span class="label label-default">最新</span></h3>
    <h3>今天空气质量<span class="label label-danger">最新</span></h3>
    <h3>今天空气质量<span class="label label-info">最新</span></h3>
    <h3>今天空气质量<span class="label label-success">最新</span></h3>
    <h3>今天空气质量<span class="label label-warning">最新</span></h3>
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